Improvement in lever take-ups for grain-binders



, T. H. PARVIN. Lever Take-Up for Grain-Binders.

N.0.198,040. Patented Dec. I1, 1877.

ATTORNEYS.

UNITED STATES PATENT OFFICE.

THOMAS H. PARVIN, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN LEVER TAKE-UPS FOR GRAIN-BINDERS.

Specification forming part of Letters Patent No. 198,040, dated December 11, 1877 application filed 7 October 6, 1877.

To all whom it may concern:

Be it known that I, THOMAS H. PARVIN, of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Geared-Lever Take-Up for Self-Binding Harvesters, of which the following is a specification: I

The object of my invention is to provide a take-up for self-binding harvesters, for taking up slack in the wire or cord used in binding, which shall give a varied or uniform tension on the wire or cord, as desired.

The invention consists in a lever carrying a sheave, which acts upon the wire or cord, the said lever being connected with another lever that is moved by a cam on the main or other shaft of the binding apparatus.

Referring to the drawing, which is a per spective view of a portion of a harvester or binder, A is the apron which contains the bundle to be bound, and B is a standard which supports the shaft 0, that carries the binderarni D.

In the apron A there is a s1ot,-b, through which the wire is drawn by the binder-arm as it is carried around the bundle.

Upon the under side of the apron A a lever, E, is pivoted, which carries at the end of its longer arm a sheave, c, and its shorter arm is connected, by a short connecting-rod, d, with a lever, F, which is pivoted to a'bar, c, that extends fromthe standard B to the upper edge of the apron A.

The shorter arm of the lever F is forked, and carries a roller, f, which is engaged by the heart-shaped cam G on the shaft 0.

Sheaves g h are placed at the back of the apron A, and a sheave, t, is placed in the slot 6, on a stud that projects from the apron at one side of the slot.'

The cord or wire used in binding the sheaves is carried by a spool, H, under the apron A, and extends upward over the sheave g, thence downward under the sheave 0, carried by the lever E, thence upward over the sheave h and downward under the sheave c, after which it is taken by the tying mechanism carried by the arm 1).

As the binder-arm D rotates it carries the cord or wire around the bundle, and a uniform or varied tension is maintained by the action of the lever E, as its motion adapts itself to the movement of the binder-arm. It moves with a positive motion, and does not remove the wire or cord from the spool except as it is re- 

